Integrated

Circuit

Systems, Inc.

ICS9LPRS535

Datasheet

1461A—07/28/09

Pin Configuration

Recommended Application:

48-pin Low Cost CK505 w/fully integrated VREG and series

resistors on differential outputs

Output Features:

•

Integrated Series Resistors on differential outputs

•

2 - CPU differential push-pull pairs

•

4 - SRC differential push-pull pairs

•

1 - CPU/SRC selectable differential push-pull pair

•

1 - SRC/DOT selectable differential push-pull pair

•

1- SRC/Stop_Inputs selectable differential push-pull pair

•

1 - 25MHz SE1 output for Wake-on-Lan applications

•

3 - PCI, 33MHz

•

1 - USB, 48MHz

•

1 - REF, 14.31818MHz

Key Specifications:

•

CPU outputs cycle-cycle jitter < 85ps

•

SRC output cycle-cycle jitter < 125ps

•

PCI outputs cycle-cycle jitter < 250ps

•

+/-100ppm frequency accuracy on all clocks

48-pin CK505 for Intel Systems

Features/Benefits:

•

Supports spread spectrum modulation, default is 0.5%

down spread

•

Uses external 14.318MHz crystal, external crystal load

caps are required for frequency tuning

Table 1: CPU Frequency Select Table

FSLC

2

B0b7

FSLB

1

B0b6

FSLA

1

B0b5

CPU

MHz

SRC

MHz

PCI

MHz

REF

MHz

USB

MHz

DOT

MHz

0

0

0

266.66

0

0

1

133.33

0

1

0

200.00

0

1

1

166.66

1

0

0

333.33

1

0

1

100.00

1

1

0

400.00

11

1

1. FS

LA and FSLB are low-threshold inputs.Pleas e see VIL_FS and VIH_FS specifications in

the Input/Supply/Common Output Parameters Table for correct values.

Also refer to the Test Clarification Table.

2. FS

LC is a three-level input. Please see the VIL_FS and VIH_FS

specifications in the Input/Supply/Common Output Parameters Table for correct values.

Reserved

100.00

33.33

14.318

48.00

96.00

PCI0/CR#_A 1

48 SCLK

VDDPCI 2

47 SDATA

PCI4/SRC5_EN 3

46 REF0/FSLC/TEST_SEL

PCI_F5/ITP_EN 4

45 VDDREF

GNDPCI 5

44 X1

VDD48 6

43 X2

USB_48MHz/FSLA 7

42 GNDREF

GND48 8

41 FSLB/TEST_MODE

VDD96_IO 9

40 CK_PWRGD/PD#

DOT96T_LPR/SRCT0_LPR 10

39 VDDCPU

DOT96C_LPR/SRCC0_LPR 11

38 CPUT0_LPR

GND 12

37 CPUC0_LPR

VDD 13

36 GNDCPU

SE1 14

35 CPUT1_LPR_F

GND 15

34 CPUC1_LPR_F

SRCT2_LPR/SATAT_LPR 16

33 VDDCPU_IO

SRCC2_LPR/SATAC_LPR 17

32 CPUT2_ITP_LPR/SRCT8_LPR

GNDSRC 18

31 CPUC2_ITP_LPR/SRCC8_LPR

SRCT3_LPR/CR#_C 19

30 VDDSRC_IO

SRCC3_LPR/CR#_D 20

29 SRCT7_LPR/CR#_F

VDDSRC_IO 21

28 SRCC7_LPR/CR#_E

SRCT4_LPR 22

27 GNDSRC

SRCC4_LPR 23

26 VDDSRC

CPU_STOP#/SRCC5_LPR 24

25 PCI_STOP#/SRCT5_LPR

48-SSOP/TSSOP

* Internal Pull-Up Resistor

** Internal Pull-Down Resistor